i used 1/2" marine plywood for the deck. pre-laminated the bottom and running a fat bead of PL is exactly how i layed the deck. followed with screws into the stringers...slather sealant on the threads. then glass it over.

stringers can go slow or fast depending on how close you get with your initial cuts. trimming and grinding to fit for fine-tuning takes time. also takes a bunch of climbing in the boat with the stringer, check the fit, climb back out with stringer and take a little off with saw or grinder...repeat. depends how anal you are too.

this is really a project where you can go super quick if you're clever. you can take forever if you want too. if you're smart about rigging supports that hold the stringer in place while you bed it and then glass you can go faster than if you are relying on the accurate fit to hold the stringer in place.